Building board positioner



I. D. DAVIS Mmh 22, 1949.

BUILDING BOARD POSITIONER Filed April 15, 1946 A P/4. 0. 0,4 V/S INVENTOR.

Patented Mar. 22, 1949 PATENT OFFICE 2 4 1; lltlahlh fi B-QARD. PosrrmNltIt; mall-Davis.Averyif ea. Application April s, 1946; Serial; No. 62272 Equine}. 1.

This invention relates to build'pg apparatus and has reference to a device for positi ing buildi b d; uehasfiheet ite lelteaven i r nd the l ke w nai inee otherwheewnr t e me during h eqnetrl etien. Q i a; bulimia T e primary ob ct o the nventlon-ls ie ro.- d a device f e ef r d o; lass t r theme: venient installation of building board.

A ot object o hein en ion sto pr vide a. ma ne or device h reby ne an can e r.

and install building board when securingthe ame, either verhead-or s.Wa. 1.ing.-.

A particular ieatureof the dev c r sides-lea pivoted u de wh ch will support, th uildin bo rd. when the, latter lain. a v rt c l: position, but; which guide will partially rotate whenin ahorig-n. zen-tal position so as 117012.110. interfere-with overhead installation.

A urtherobi et of: theinventienis o; r v den a e which Q d nar lse as asters-equ l y paced? ner shown in Figures 1 and 2, for conveniently rolling'the device.- from placeto place.

peslheleg o he ba e v a le to. ellda l ei a g ide 5: o w h o he. ast rs ar ach d:- As: t i la y shown n F gure. 5: he uid em er 5 is r e w t a trigger mechanism consisting of a bell crank 6 etur b a. pi t. i l to h r id ihe. said: guide. One end of the crank 6 is pivotally; connected; with a rod 8; which extendslengthwise ttheel d and rm na s. in an; inte r and:

a era l p ti ed bu The rod 8; isslidably supported by-a bearing 10; The ere d; i ej e c a k cisi etc di e eceive a downwardly projecting pin H; perma-.,

. nentlxse clired to the; underside of the leg 2 By with respect. to the; hase-fs center, but which; 22,;re. l

capa l of. m ica ly cha ina h r ation when the device is moved against a wall, such. as when installing building board; 01 ,1 shiplap, on walls.

A. further object, of? the invention resides; in;

the; versatility of; the device. whereby; the same. may-be collapsed for, trans-porting, and= extension. means whereby building.- board'may; be, installed; at various heights,

These and other; objects of; the invention; will: become apparent fromthe following description; of the accompanying drawings, wherein:

Figure 1 is an. elevational view of the-back of the. invention: and particularly showing; the con struction of the fram and the hoisting-mechae. msm.

Figure 2 is an end elevational view-oi Figure- 1 and particularly showing the pivoted guide" attached to the frame, and further illustrating-the slidable movement casters indotted lines;

Figure 3 is an endelevationalview similar-to the top portion or Figure 2 and showing the relative position of the guide when the building board is horizontally supported byiheframe.

Figure 4 is an elevational view of the frame in its collapsed position.

Figure 5 is a broken perspectiveview-of a portion of the ase. enez ar lt ler r llustra the trigger mechanism for moving certain oi the. ast nd Figure 6; is a broken side elevational View; of; two of the extensions in their assembledpo I.

Accordingly, the invention includes a base. I, having radially disposed legs 2 a verticalhg. positioned standard 3 projecting; upwardly ,ronii thecenter of the said ba'se,j (gasters l are secure v he ow r ued i heleastsl heme r ange en h a r 4 may e. paced. ach. other for rolling the device equally tronr e iro tp a p ac ewev r; as; will b een;

ll: the descr o ife at on thelid n feature. of the guide 5 and its attached casters 4 is; for

qehv hleht v eeth n b l ns b ar e he like e ical.- art of he bu din nde c n rue.- iehwhea hee id i lnit e end d positi s:shgwhz rdott tl h l r re: a o s ep. mechanism-4a; or the like, attached to the base I. r nts; n an ur r; e nt e a ers 4 from rolling.

l3 eferringnow. to; Figures 1, and 2, the vertical tahda dt le op call c s. on m re x: e s ach. of. hi a a p o e ra k: gear l3- along one side.

onesideof the standard 3 is opened to receiveor-removethe extensions 12, one at a time, when a multiple of thesame are employed.

Near the upper end of the. standard 3 and integral therewit-h, thereare corresponding ears M which rotatably receive a horizontal shaft I 5. Be

tween theears'M and mounted on the shaft I5 therois a pinion l6, and outwardly of one. of the ears Hithere isa cr'anki1 rigidly secured to the; said shaft. Above the; pinion l6 and similarly. supported. by other ears l8 and a pin I9 therethr'ollgh; there isa pawl 20, the end of which: engages the teeth of the pinion; I6. By this are. elie me t e n ns It may e maintaine in their raised; position; by reason of the ratchet,

eiffect, of the pawl; l1.

As. will benoted in Figure 6. one end of eachextension [I is provided with a longitudinal pin 2| which fits into a corresponding opening 2-2 in.

the other end of. each of the said extensions. The up ermost longitudinal pin in the assembly 22- receiyes therearound a collar .23 as shown in Figure 1 orrthe shoulder of the extensionloody L2, and. su ports a. compression spring 24 DOSitioned. rou d. th sa i:

Another collar 2.5. is similarly positionedaround' the referred. to; pin 21. for slidable movement eremand slida y u s r s e b r Z of a frame assembly 21. The frame 2 1:, which is As shown in Figure 2;

substantially rectangular in shape, is pivotally secured to the cross member 26 by a hinge 28, as shown in Figure 2. Preferably, the cross member 26 has a broad upper surface, the purpose of which will become apparent in the description of operation.

The frame assembly 21 includes parallel upper and lower members 29, and parallel end members 30, all of which are pivoted at their respective corners by means of pins 3|. Central frame member 32 is similarly pivoted by pins 33 to the upper and lower members 29 and is parallel with respect to the end members 39. The hinge 28 is attached to the lateral member 32 for supporting the frame 21.

Projecting from each end member 30, and located intermediate the hinge 28 and the lowermost frame member 29, there are pins 34 which pivotally support guides 35, which guides are diagonally shaped along corresponding sides, substantially as shown in Figure 3. Each guide 35 includes an upwardly and outwardly projecting lug 36 at one end, and a downwardly or inwardly projecting lug 31 at the other end. Additionally, the lower or outer ends of the guides 35 may include a connecting brace 31 connected therebetween so as to cause the two guides to operate in unison. The brace 31 is detachably secured by any suitable means (not shown).

A hook type brace 38 may be secured to one of the frame members, such as 3|], at its one end by an eye screw 39, whereas the hook portion of the said brace engages another eye screw 40 secured to another of the frame members, such as 29.

Reference is now made to Figure 4 wherein the frame assembly 21 is shown in its collapsed position. The hook brace 38 is detached from the eye screw 40 at its hooked end, and by reason of the described pivoted parallelogram construction of the said frame, the latter may be folded as shown.

In carrying out the scheme of collapsibility, the cross member 26 may be detached from the hinge 28 and lifted from the extending pin 2|. The attachment between the standard 3 and the base 2 may be such that the last referred to parts may be detachably secured by suitable means (not shown) for further carrying out the collapsible feature of the invention.

In operation, the device is assembled as shown in Figures 1 and 2, with the frame 21 in its vertical position. A sheet of building board 41 is placed vertically upon the outwardly projecting lugs 36 of the guide members 35 and, when attaching the said board overhead, the frame is tilted to a horizontal position. In so doing, the inwardly projecting lugs 31 of the guides 35 contact the frame supporting cross member 25, causing the outwardly projecting lugs 36 to move below the lower plane of the building board II. The crank I1 is then turned, lifting the cross member 26 and the frame 21, and thus placing the board 40 against ceiling joist where the same is to be secured.

The slidable pin action within the cross member 26, together with the action of the compression spring 24, allows the building board 4| to be held in place under spring tension. The pawl 20 engages the crank gear I 6 holds the frame 21 in its upwardly extended position, thus allowing the workman to use both of his hands for nailing.

To lower the frame 21 after nailing, the pawl 29 is disengaged and the said frame is lowered by means of the crank I1.

When securing building board 4|, shiplap or the like, to a vertical surface, such as a wall, the board is placed upon the guides 35 in the manner previously described, but the frame is not tilted. While in this position the device is rolled to the wall where the button 9 of the base assembly contacts the said wall, and through the medium of the rod and bell crank previously described, allows the caster supporting guide 5 to slide as shown in Figure 2. The stop 4a. is then depressed so as to prevent tilting or rolling of the device, and by means of the crank, the board 4! is raised vertically to the position where it is to be nailed. After nailing, the frame 21 is lowered by means of the crank [1.

What I claim is:

1. In a positioner for installing building board or the like, the combination of a standard, a vertically disposed and movable extension forming a part of the said standard, and a frame pivoted to the upper end of the said extension and selectively extensible lugs connected with the said frame for supporting and engaging the building board when the said frame is in its tilted or vertical position.

2. In combination with a positioner as defined in claim 1, a base supporting the named standard, casters supporting the said base, and a slidable guide within the said base and supporting certain of the said casters.

3. In combination with a positioner as defined in claim 1, a base supporting the named standard, casters supporting the said base, a slidable guide within the said base and supporting certain of the said casters, and a lock mechanism for detachably engaging the said guide with the said base.

4. In a positioner for installing building board or the like, the combination of a base, casters supporting said base, a standard extending upwardly from said base, a. vertically movable extension forming a part of said standard, a tiltable frame hingedly secured to the upper end of the said extension, and selectively extensible guide means attached to said frame for engaging building board or the like when the said frame is in a tilted position.

5. In a positioner for installing building board or the like, the combination of a vertically extensible standard, a pin vertically disposed at the upper end of the said standard, a lateral cross member engaged by said pin, a frame hingedly secured to the said cross member, guide members having diagonal sides pivotally attached to the said frame at each end thereof, and projecting lugs on the said guide for engaging building board when the said frame is in its tilted or vertical position.

IRA D. DAVIS.

' REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,236,355 Ratto Aug. 7, 1917 1,606,101 Russell Nov. 9, 1926 1,685,144 Austin Sept. 25, 1928 1,725,329 Blandford Aug. 20, 1929 1,762,397 Kinser June 10, 1930 1,764,678 Fox June 17, 1930 2,183,679 Hlllis Dec. 19, 1939 2,337,796 Baker et a1 Dec. 28, 1943 2,358,865 McPherson Sept. 26, 1944 

